The multifunctional spiral oil press is a continuous oil press equipment that uses a spiral shaft to rotate and push the embryo inside the press cage, squeezing it into cakes and extruding oil at the same time. It is suitable for pressing various oil crops and has the advantages of high oil yield, easy operation, and strong adaptability. The following is a detailed introduction to the multifunctional spiral oil press:

Working Principle of Oil Press

The working principle of a spiral oil press is mainly based on the pushing effect of the rotating spiral shaft inside the press chamber, which continuously pushes the pressed material forward. At the same time, due to the shortening of the screw lead or the gradual increase of the root diameter, the volume of the squeezing chamber space continues to shrink, resulting in a continuous squeezing effect on the squeezing material. The basic process of oil extraction through pressing is generally divided into three stages: the pre pressing stage, the main pressing stage, and the cake making and draining stage.

Market Advantages of Oil Presses

• Continuous production: Compared with traditional intermittent oil presses, spiral oil presses can achieve continuous production and improve production efficiency.
• Single machine processing capacity is large: it can adapt to large-scale production needs and handle a large number of oil crops.
• Suitable for various oil crops: can press peanuts, soybeans, rapeseed, sesame and other oil crops, with strong adaptability.
• Dynamic squeezing: By rotating the screw shaft and shrinking the squeezing chamber, dynamic squeezing of the squeezed material is achieved with high oil yield.
• Easy to operate: Equipped with an intelligent control system, it is easy to operate and user-friendly.

Comparison of Cold-Pressing and Hot-Pressing Technologies in Oil Extraction Machines

Cold pressing (cold extraction) and hot pressing (hot extraction) are the two primary methods used by oil presses to extract oil from seeds. They exhibit significant differences in temperature control, oil yield, oil quality, equipment requirements, and applicable scenarios.

• Differences in Temperature Control
• Cold-Press Oil Extractor: Operating temperatures typically remain below 60°C, with some processes even falling below 40°C.
• Principle: Material is directly compressed through mechanical pressure without external heating, relying solely on minimal heat generated by the material’s own friction.
• Advantages: Prevents high temperatures from destroying active components in oils (such as vitamin E, unsaturated fatty acids, antioxidants, etc.), preserving natural flavor and nutritional value.
• Hot-Press Oil Extractor: Materials are typically heated to 100-130°C, with some processes reaching over 150°C.
• Principle: Pre-treatment such as steaming or roasting disrupts cellular structures, denatures proteins, and reduces oil viscosity, thereby enhancing oil extraction rates.
• Advantages: High temperatures promote oil flow, significantly boosting extraction efficiency.
• Oil Extraction Rate Comparison of Oil Presses
• Cold press machine: Oil extraction rates are typically 10%-15% lower than those of hot pressing, as the absence of high temperatures prevents cell structure breakdown, leaving some oil residues in the cake meal.
• Hot-pressing machine: Oil yield can be increased to 1.2–1.5 times that of cold pressing, as high temperatures enhance oil fluidity and thoroughly rupture cell walls.

The multi-functional oil press meets diverse customer needs, offering cold and hot pressing capabilities in a single unit. Available in multiple specifications, it accommodates a wider range of clients.

Target Audience for Oil Presses

• Small-scale oil mills: Process common oilseeds like soybeans, peanuts, and rapeseed to meet household or community needs.
• Centralized processing sites: Concentrate on pressing cottonseed, sunflower seeds, and similar materials to achieve efficient resource utilization.
• Food Processing Plants: Produce premium edible oils like walnut oil and flaxseed oil, requiring cold-pressing techniques.
• Industrial Sector: Press industrial raw materials such as castor oil and tung oil.

Is a multi-purpose oil press the equipment you need?

The screw oil press can process over 60 types of raw materials with high adaptability and pure oil yield, aligning with healthy food concepts. It has attracted attention from discerning customers nationwide. Join the oil processing industry with Zhengzhou Fude Machinery, which offers complimentary equipment configuration guidance, competitive pricing, and comprehensive technical training services to help you embark on a truly healthy oil production journey.